Stop-cock.



M. S. HOLLIS.

STOP 000K.

APPLICATION FILED JULY 1, 1911.

1,040,327. Patented Oct. 8, 1912.

glgmnnr all SW00 nto't; Milt/5 H 22 $511 l g; G Hfozucgv MILES- s. HOLLIS, or NEW YORK, N. Y.

STOP-COCK.

Specification of Letters Patent.

Patented Oct. 8, 1912.

Application filed July 1, 1911. Serial No. 636,479.

To all whom it may concern:

Be it known that I, MILES S. Hours, a citizen of the United States, and a resident of New York, borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Stop-Cocks, of which the following is a full, clear, and exact description.

This invention relates more particularly to a safety stop cock for use in connection with gas fixtures.

One of the principal objects of the invention is to provide a simple and eflicient device which will have the general appearance and characteristics of the ordinary gas or other cock and which is so constructed that it cannot be operated in a rotary direction to turn on or shutoff the gas or other fluid, except by a separate and independent movement in a difl'erent direction of another element forming a part of the device, thereby overcoming the objections due to the liability of accidentally turning. on the gas or other fluid which often results in loss of life or injury to property.

Another object of the invention is to provide simple and efficient means for holding the shut-oil element either in permanent engagement with the operating means therefor or disengaged therefrom so that the device can be used in the usual manner without any independent operation or movement of a part of the same or to require such independent movement according to the wishes of the user.

A further object of the invention is to provide a simple and eflicien't device which is neat in appearance and in which the spring or other element normally holding the shut-oil" element and operating means disengaged, is located within the device. I

\Vith these and other objects in view, the invention will be hereinafter more particularly described with reference to the accompanying drawings, which form a part of this specification, and will then be pointed out in the claims at the end of the description.

In the drawings, Figure 1 is a longitudinal section, partly in elevation, of one form of device embodying my invention. Fig. 2 is a sectional plan view taken on the line IIII of Fig. 1,.looking in the direction of the shut-ofi' element. Fig. 3 is a detail plan looking in the direction opposite to that of Fig. 2, showing the means for keeping the plu and operatin means therefor disenga e and Fig. 4 sliows a slightly modified orm of a part of the invention.

While the invention is shown applied to a stopcock adapted for use in connection with gas fixtures, it will be understood that the invention may be applied to cocks or valves used for other purposes without departing from the character of the invention, and where the words valve or cook are employed, they are intended to be used as equivalents.

The body 10 may be of the usual or of any preferred form and may be connected to a pipe or other source of supply 11, and in said body 10 is an opening or passage 12 through which the gas or other fluid may pass into a pipe or other connection 13. This body 10 has a plug 14 or other shutoff element which has an opening 15 therethrough which is adapted to be placed into communication with the source of supply to permit the fluid to pass through the body 10 and through the pipe 13 or to have the fluid shut oil when the plu or element 14 is moved at substantially rig t angles to that shown to arrange the opening 15 transversely of the passage 12 as is usual in devices of this character. The lu 14 may be tapered and may be held withln a similarly formed opening in the body 10 and is held against lengthwise movement in the body by a screw or other part 16 which is arranged in one end of the plug and has a shoulder adapted to engage a. part of the body 10. A pin 17 projects outward from the body of the plug 14 and is adapted to have a limited movement in a slot or recess 18 in the upper portion of the valve body, said slot serving to form shoulders 19 and 20 against which the pin is adapted to engage and thereby positively limit the rotary movement of the plug or shut-ofi' element 14 in either direction.

A tubular casing 21 has an enlarged part 22 which is interiorly threaded to engage the threaded part 23 of the body 10 so as to be held thereto, and said casing has an enlarged openin 24 and a smaller opening 25 formin an a butting shoulder 26 on the interioro said casing. The casin 21 is adapted to rotatably and slidably old a. stem or rod 27, on the outer end of which is an operating handle 28, and at the opposite end of sald stem is a head orenlarged part 29 which is adapted in one position to engage the shoulder 26 to limit the outward -movement of said stem 27 forming a part of the plug operating means. The head 29 is slotted at 30 to form side abutments 31 which extend throughout the diameter of the head 29, and said slot is adapted to fit over an elongated lug, extension or projection 32. This lug forms an abutment for the head so that when the head is moved inward to cause the lug 32 to enter the slot 30, the said plug will be rotated thereby so as to open or close the passage to permit the fluid to pass through the body 10 or to be shut ofi" according to the direct-ion in which the handle is rotated.

To permit the handle and operating means to be held normally disengaged from the plug 14 to cause the operating means to be rotated independently of said plug, various means may be employed. As shown, a pin, element or device 33 has one end rounded and this end is adapted to rest upon the upper surface of the lug 32. the said pin being adapted to slide within a recess 34 located in the stem 27. The pin or device 33 has a reduced portion 35 and around this reduced portion is a spring 36 located within the recess, the tension of said spring tending normally to force the stem 27 and head 29 outward to cause said head to normally abut against the shoulder 26 of the casing 21. The pin serves as a bearing surface for the operating means and permits the same to rotate freely as the friction is very small between the pin and the plug, and. the said pin through the action of the spring 36 tends normally and serves also to hold the plug to its seat so that there is less likelihoodot leakage in case of wear. By locating the pin and spring in the manner shown. the said spring is entirely inclosed within the device and the device thereby more closely resembles the-appearance of the ordinary cook or valve.

It will be seen by constructing the device in the manner shown that the operating means including the handle 28 and stem 27 may be rotated at will without rotating or afi'ecting the position of the plug 14 or other shut-off element, so that it will require the inward movement of the handle 28 and stem 27 against the action of the spring 36 before the said plug can be rotated. In this case, the pin 33 will enter the recess 34 and as soon as the plug has been rotated and the handle released, the said spring will. force the handle 28 and stem 27 outward thus releasing the head 29 from the lug 32 which will permit the operating means to be rotated independently of the plug. By such a construction the liability of an accident occurring is reduced to a minimum as the accidental rotation of the handle 28 will not operate the shut-ofl element.

If it is desired to hold the'operating means normally in engagement with the plug to rotate the same, or in a position to be disengaged and which will prevent inward or outward movement of the operating means to operate the plug, the stem 27 may be provided with two annulargrooves 37 and 38. These grooves are so positioned that they are adapted to be placed in alinement with the screw 39 or similar element which is adjustable in a threaded aperture in the tubular casing 21 and is adapted to have its inner end engage either one of the grooves 37 or 38. If the screw is brought in position to engage the grooves 38 the handle 28 and stem 27 will be locked disengaged from the plug so that it will be free to rotate but not the plug and o erating means in operative position to permit the plug to be rotated in the usual way.

In Fig.4 instead of a pin, the spring 37 may have its end provided with a cap 40' which is adapted to bear upon' the lug 32 in order that the said spring may tend normally to hold the plug and operating means disengaged, though it will be understood that instead of the cap 40, simply a button may be provided on the end of the spring in order to provide a smooth bearing surface for the spring against the lug 32 of the plug.

From the foregoing, it will be seen that a simple and eflicient device is provided wherein the rotation of the plug or shut-ofl element of a cook or similar device requires two movements of the operating means before the said plug can be moved to shut off the source of supply or to permit the same to flow; that said device is simple in construction and may be readily made and assembled; that the means for holding the operating means disengaged from the shut-oil element is entirely inclosed; that simple means is provided whereby the plug may be held against its seat to compensate for wear;

and that simple means is provided whereby the operating means for the shut-off element may be positively held in an engaged or disengaged position.

Having thus described my invention, I claim as new and desire to secure by Letters Patent y 1. A device of the character described comprising a body having a passage therethrough, a shut-off element movably held insaid body and provided with an elongated engaging portion, a tubular. casing having two. openings of relatively different sizes therethrough, a stem provided with a head arranged to rotate and to slide in said tubular casing and having means whereby the stem may be rotated, said head having a slot adapted to fit over the elongated portion of the shut-off element, a spring located within the stem, a pin normally forced in one direction by the spring and having one end normally resting against the elongated portion of the shut-ofl' element, together with means whereby the stem may be positively held in either an engaged or disengaged position.

' 2. A device "of the character described comprising a body having a passage therethrough, a shut-ofi' element movably heldin said body and provided with an elongated engaging portion,.a tubular casing having two openings of relatively different sizes therethrough, a stem provided with a head arranged to rotate and to slide in said tubular casing and having means whereby the stem may be rotated, said head having a slot adapted to fit over the elongated portion of the shut-ofi element, a spring located within the stem, and a pin normally forced in one direction by the spring and having one end normally resting against the elongated portion of the shut-off element.

3. A device of the character described comprising a body having a passage therethrough, a shut-oil element movably held in said body and provided with an engaging portion, a tubular casing, a stem provided with a head arranged to rotate, said head heing adapted to engage the engaging portion of the shut-ofl' element, and a spring located within the stem and a pin normally forced in one direction by the spring and having one end normally resting against the engaging portion of the shut-oil element, whereby the head is normally held disengaged from said element.

4:. A device of the character described comprising a body having a passage therethrough, a shut-ofi' element movably held in said body and provided with an elongated portion, a tubular casing having two openings of relatively different sizes therethrough, a stem provided with a head arranged to rotate and to slide in said tubular casing and having means whereby the stem may be rotated, said head having a slot adapted to fit over the elongated portion of the shut-ofi' element, a spring located within the stem, means normally forced in one direction bythe spring and normally rest-ing against the elongated portion of the shut-ofi element, together with means whereby the stem may be positively held in either an engaged or disengaged position.

This specification signed and witnessed this 29th day of June A. D. 1911.

MILES S. HOLLIS. Witnesses:

C. BARTELS, LESTER C. TAYLOR. 

